Support ip[6]tables protocol in firewallchain

[jcharaoui]

Summary

This mirrors the values accepted for the firewall provider.

Additional Context

If a firewallchain resource is defined with protocol => 'ip6tables', this fails with error Execution of '' returned 1: Error: Could not execute posix command: no implicit conversion of nil into String

Checklist

• 🟢 Spec tests.
• 🟢 Acceptance tests.
• Manually verified. (For example puppet apply)

[jerome2710]

Subscribing... my ipv6 rules fail as well:

Notice: firewall[003 IPv6]: Creating: Creating Rule '003 IPv6' with {:name=>"003 IPv6", :ensure=>"present", :protocol=>"ip6tables", :chain=>"WHITELIST", :source=>"...redacted...", :destination=>nil, :proto=>"tcp", :dport=>"22", :jump=>"ACCEPT", :table=>"filter"}
Debug: Executing: ''
Error: firewall[003 IPv6]: Creating: Failed after 0.007595 seconds: Execution of '' returned 1: Error: Could not execute posix command: no implicit conversion of nil into String
Error: /Stage[main]/Profile::Firewall::Pre/Firewall[003 IPv6]: Could not evaluate: Execution encountered an error

[bastelfreak]

@jcharaoui can you please rebase against main to get rid of the merge commit?

[jcharaoui]

@jcharaoui can you please rebase against main to get rid of the merge commit?

Done!

[redat00]

Hi !

I just tested this and was able to get my IPv6 rules working as expected with this fix.. Otherwise it would not.
Any idea if this could be merged somehow ?

Thanks in advance ! In the meantime I'll just clone the module and make the fix locally.